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5 papers · 2 filters
Spin-Transfer Torque in Helical Spin-Density Waves
O. Wessely, B. Skubic, L. Nordstrom
The current driven magnetisation dynamics of a helical spin-density wave is investigated. Expressions for calculating the spin-transfer torque of real systems from first principles…
The quantum-mechanical basis of an extended Landau-Lifshitz-Gilbert equation for a current-carrying ferromagnetic wire
D. M. Edwards, O. Wessely
An extended Landau-Lifshitz-Gilbert (LLG) equation is introduced to describe the dynamics of inhomogeneous magnetization in a current-carrying wire. The coefficients of all the ter…
Influence of aggregate size and volume fraction on shrinkage induced micro-cracking of concrete and mortar
Peter Grassl, Hong S. Wong, Nick R. Buenfeld
In this paper, the influence of aggregate size and volume fraction on shrinkage induced micro-cracking and permeability of concrete and mortar was investigated. Nonlinear finite el…
Density-functional investigation of the rhombohedral to simple cubic phase transition of arsenic
Patricia Silas, Jonathan R. Yates, Peter D. Haynes
We report on our investigation of the crystal structure of arsenic under compression, focusing primarily on the pressure-induced A7 to simple cubic (sc) phase transition. The two-a…
Molecular Thin Films: a New Type of Magnetic Switch
S. M. Heutz, C. Mitra, W. Wu +9
The design and fabrication of materials that exhibit both semiconducting and magnetic properties for spintronics and quantum computing has proven difficult. Important starting poin…